Abstract
In sports injury, the pain of the injured point frequently stems from an excessive mechanical stress. Physical therapy for sports injury of lower extremities can be effectively performed with three-step method; in the first step physical therapy for pain relief and remission of inflammation, in the second step conventional physical therapy on the injured point with a primary purpose of reducing the mechanical stress on the point, and in the third step physical therapy for removing causative physical factors of injury. In addition to these, the followings may be taken in consideration; muscle activity highly depends on the posture, limit of range of motion or muscle shortening undoubtedly affects other joints, monarticular muscle shows different motor response from polyarticular muscle, and there is a torque that outside power requires the joint in every movement.
